JPH0355249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for cutting the ends of a long member having an irregular cross section, which is positioned near the right and left sides of a stretch bender and held by clamps.

BACKGROUND TECHNOLOGY Generally, when bending the axis of a long vehicle molding M with an irregular cross-sectional shape as shown in FIG. A stretch bender is used that presses the abutment die against the curved surface of the abutment die.
When applying this bending process, approximately wavy chuck marks are left on the left and right ends held by the clamps, so it is necessary to cut and remove each left and right end to a predetermined length.

Conventionally, this type of cutting process was normally performed in a separate process after bending with a stretch bender, but if they could be done together in the same process, the material would be transported to a separate process and then applied to a separate cutting device. You can save time and effort.

Problems to be Solved by the Invention However, with a stretch bender, the bending process is performed by pulling the elongated member in the longitudinal direction with clamps that hold the left and right ends and pressing the side surface against the curved surface of the abutment die. Therefore, when performing, for example, scissor shearing in this tensioned state, it is necessary to cut the end of a long member that has been bent and formed into an irregular cross-sectional shape, so it can be avoided that the mechanism becomes complicated. It can't be done.

Means for Solving the Problems In the end cutting device for a long member having an irregular cross section according to the present invention, a lower blade moves upward until the curved surfaces corresponding to the curved surfaces of the abutment die are joined to each other; An upper blade that moves downward toward the lower blade, and a pivot point is set so that at least the lower blade of each of these blades can come into contact with the irregular cross-sectional shape of the elongated member. has been done.

Function: In this device for cutting the end of a long member with an irregular cross section, the lower blade enters the underside of the long member and supports the long member on a curved surface corresponding to the curved surface of the abutment die. This enables stable cutting of the end side of a long member.

Embodiments The following description will be made with reference to the accompanying drawings.

This cutting device is for cutting the end side of a long member such as a vehicle molding M having an irregular cross-sectional shape as shown in FIG. 12, which is held by a stretch bender clamp. A cutting device C ₁ is installed near the left and right sides of the stretch bender S as shown in FIG.
C ₂ are placed respectively. Stretch Bender S
is equipped with an abutment die 1 having a curved surface formed into a desired curvature in a shape substantially corresponding to the cross-sectional shape of the elongated member M, and a clamp 2 that clamps the left and right ends of the elongated member M in pressure contact with the curved surface. ,3. The clamps 2 and 3 are deviated away from each other in order to apply a tensile force in the longitudinal direction of the elongated member M, and are attached so that the elongated member M moves toward and in synchronization with the abutment die 1, respectively. ing.
When the stretch bender S presses the long member M against the curved surface of the longitudinal end of the apartment die 1, the cutting devices C ₁ and C ₂ are arranged to cut the end of the long member M. ing.

The cutting devices C ₁ and C ₂ are connected to a base plate 10 which is installed separately from the abutment die as shown in FIG.
The back plate 11 and the side plate 12 are used as a machine frame, and the back plate 11
The driving source 13 is an air cylinder or the like having a cylinder rod inserted therethrough and fixed to the cylinder.
A horizontally movable movable plate 14 is connected to the rod end of the drive source 13, and a rotary plate 16 is provided which is pivotally supported by a support shaft 15 in opposition to the side surface of the side plate 12. The rotating plate 16 has a lower blade 17 having a curved surface corresponding to the curved surface of the abutment die 1.
is integrally attached to the lower side, and a cam follower 18 is integrally attached to the rotating plate 16 below the lower blade 17. A cam piece 19 is attached to the cam follower 18 so as to project horizontally from the lower side of the movable plate 14 so as to move in contact therewith. Also,
On the upper side of the movable plate 14, a support shaft 23 is slidably supported in a horizontally elongated hole 22 formed in the plate surface near the other end via a connecting arm 21 whose one end side is pivotally supported by a support shaft 20. The upper blade arm 24 is connected and equipped with the upper blade arm 24 which is planted and fixed. The upper blade arm 24 is pivotally supported on the side surface of the rotary plate 16 by a support shaft 25,
An upper blade 26 is mounted on the other end side of the shaft 25 so as to protrude in a direction opposite to the lower blade 17 . Further, a tension spring 27 is provided between the upper blade arm 24 and the side plate 12 to facilitate the return movement of the upper blade arm 24.

In the cutting device configured in this manner, when the drive source 13 is operated as shown in FIG. 3, the movable plate 14 moves forward as the cylinder rod 13a moves forward in stroke, and the cam attached to the movable plate 14 moves forward. The cam follower 1 whose piece 19 is equipped on the rotary plate 16
8, the rotary plate 16 is rotated counterclockwise with the support shaft 15 as a pivot point, and the lower blade 1
7 is moved upward to a fixed position where the curved surfaces of the abutment die 1 and each other match. In synchronization with this, the upper blade arm 24, which is connected to the movable plate 14 by the connecting arm 21, moves downward.
3 is pressed by the edge of the horizontally elongated hole 22, so that the pivoting is performed using the support shaft 25 as a pivot point. The upper blade 26 and the lower blade 17 each have a blade length 26.
It is preferable that both a and 17a abut over the irregular cross-sectional shape of the elongated member M, thereby cutting the end side of the elongated member M,
This movement is caused by the relationship between the pivot points of the support shafts 15 and 25 that pivotally support the mechanical parts of the lower blade 17 and the upper blade 26, and the cross-sectional shape of the elongated member M that is supported by the curved surface of the abutment die 1. It is set.

To explain the details, the elongated member M has a flange portion m that protrudes inward as shown in FIG. The curved surface of the abutment die 1 is formed by holding the abutment die 1. As shown in FIG. 5, the lower blade 17 moves upwardly through the elongated member M to receive the flange portion m from below the elongated member M, and the upper blade 26 connects with the lower blade 17 from above. By moving the blades downward so as to cross each other, both cut the end side of the elongated member M. These blades 17,2
As shown in FIG. 6, the blade lengths 17a and 26a of 6 are formed in a shape corresponding to the width and upper and lower surfaces of the irregular cross-sectional shape of the elongated member M.
The positions of the support shafts 15, 25 that rotatably support the blades 17, 26 are set so that the blades 17, 26 can abut the elongated member M across its width. These rotate in synchrony as shown in FIG. 7, but the lower blade 17
is rotated to a position where the curved surface of the abutment die 1 and the continuous curved surface 17b from the blade length 17a are aligned with each other, as shown in FIG. In this state, as shown in Fig. 9, the flange part m is received and the blade length is 1.
The lower blade 17 is positioned so that the lower blade 7a slips under the elongated member M. When the long member M is supported by the lower blade 17, the upper blade 26 moves downward as shown in FIG.
The ends of the elongated member M are cut in cooperation with each other. The cut end becomes like the imaginary line X shown in FIG. 11, and the product M and the terminal side M' can be separated from each other with this. After the cutting is completed, the drive source 13 is moved backward by a stroke as shown in FIG.
Each mechanical section can return to its state before the shearing operation.

In addition, in the embodiment described above, the lower blade 17 and the upper blade 2
Although it has been explained that it is preferable that the blade lengths 17a and 26a of 6 are in contact with each other over the width of the elongated member M, the tensile force of the clamps 2 and 3 is relaxed during the cutting process, and when the clamps 2 and 3 are released for cutting. If the blade length 17a of the lower blade 17 is brought into contact with at least the width of the long member M, the blade length 26a of the upper blade does not necessarily have to be brought into contact with the length of the long member M over the width thereof.

Effects of the Invention As described above, according to the terminal cutting device for a long member with an irregular cross section according to the present invention, not only can the terminal cutting process be performed extremely efficiently, but also the stump edge can be beautifully finished with an integrated shape. You will be able to do this.

[Brief explanation of drawings]

Figures 1a and b are plan and front views of a stretch bender equipped with a cutting device according to the present invention, Figures 2a and b are side and front views showing the mechanism of the cutting device, and Figures 3a and b are 4 is a side and front view showing the drive mechanism of the cutting device during shearing, and FIG. 4 is a side sectional view of the elongated member pressed against the abutment die.
Fig. 5 is a partial plan view showing the positional relationship between the abutment die and each blade, Fig. 6 is an explanatory diagram showing the positional relationship of each blade before operation, and Fig. 7 is a portion shown when each blade is in the middle of rotation. A perspective view, Figures 8 and 9 are explanatory diagrams showing the rotation stop position of the lower blade, Figure 10 is an explanatory diagram showing the blade length of each blade in contact with a long member, and Figure 11 is an explanatory diagram showing the position of each blade. FIG. 12 is an explanatory view showing the stump edge with imaginary lines, and is a partial perspective view showing an example of the elongated member. S: Stretch bender, 1: Abutment die, 2, 3: Clamp, C ₁ , C ₂ : Cutting device, 1
7: Lower blade, 26: Upper blade, 17a, 26a: Blade length of each blade, 15, 25: Support shaft for setting the pivot point of each blade, M: Long member.

Claims (1)

[Claims] 1 Located near the left and right sides of the stretch bender, which performs bending by holding the left and right ends with clamps and pressing the sides against the curved surface of the abutment die while applying a tensile force in the longitudinal direction. This is an end cutting device for a long member having an irregular cross section, which cuts the left and right ends held by respective clamps, and the lower part moves upward until the curved surfaces corresponding to the curved surfaces of the abutment die are joined to each other. A blade and an upper blade that moves downward toward the lower blade, and pivot points are set so that at least the lower blade of each of these blades can abut over the irregular cross-sectional shape of the elongated member. An end cutting device for a long member having an irregular cross section.